The performance of a combined solar photovoltaic (PV) and thermoelectric generator (TEG) system is examined using an analytical model for four different types of commercial PVs and a commercial bismuth telluride TEG. The TEG is applied directly on the back of the PV, so that the two devices have the same temperature. The PVs considered are crystalline Si (c-Si), amorphous Si (a-Si), copper indi...

The detailed temperature dependence of the infrared-active mode in Fe1.03Te (TN 68 K) and Fe1.13Te (TN 56 K) has been examined, and the position, width, strength, and asymmetry parameter have been determined using an asymmetric Fano profile superimposed on an electronic background. In both materials the frequency of the mode increases as the temperature is reduced; however, there is also a slig...

The problem of impurities and defect states in lead telluride-based semiconductors is of crucial importance for their practical applications. X-ray absorption fine structure (XAFS) techniques are capable to address some of the key issues regarding impurities position, their valent state, as well as the local structural changes of the host lattice in the immediate surrounding of the impurity ato...

Polycrystalline Bi2Te3 nanowires are electrochemically grown in ion track-etched polycarbonate membranes. Potentiostatic growth is demonstrated in templates of various thicknesses ranging from 10 to 100 μm. The smallest observed nanowire diameters are 20 nm in thin membranes and approx. 140 180 nm in thicker membranes. The influence of the various deposition parameters on the nanowire growth ra...

This research paper demonstrates a study that underscores and emphasizes the conceptualization of micro machined generators which are Nanocomposite PCM based Thermo Electric Generators comprising thin-film metals with without phase change materials. Three pairs such as Gold/Nickel, Iron/Constantan, Bismuth/Telluride PCM. have been identified, simulated analyzed for testing improving their overa...

The High-Brightness Electron Source Lab (HBESL) at Fermilab operates an L-band RF gun (1.3-GHz) that incorporates a Cesium Telluride (Cs2Te) photocathode illuminated by an ultra-short (sub-100 fs) laser pulses. In this contribution we report recent studies on exploring the electron beam emission using 800 nm laser pulses (instead of the 266 nm nominal wavelength used for linear photoemission). ...

2014 This paper reviews the structural, thermal, mechanical, optical, and electrical properties of CdTe and compares them with the physical properties of the other IIB-VIA compounds. Section L 2 : Physical properties and growt property relationships.